Sweat collecting device and methods for use and detection of tampering
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorDavid A. Kidwell
Life of this patent
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Abstract
The invention is useful for providing sweat collecting devices for the detection of chemicals or biochemicals in the perspiration of a living subject while reducing drug contamination from without (external sources), and for detecting tampering of the sweat collection device. The invention also provides a method for using the sweat collecting device which reduces and identifies prior chemical or biochemical contamination on the skin of the tested subject.
Claims22
A device for collecting chemicals or biochemicals in perspiration for later analysis comprising:
- a membrane layer;
- an absorbent pad layer for collecting perspiration located below said membrane layer;
- and
- an air gap between said membrane layer and said absorbent pad layer;
- wherein said air gap separates said absorbent pad layer from said membrane layer to prevent movement of liquid between said absorbent pad layer and said membrane layer.
A device for collecting chemicals or biochemicals in perspiration comprising:
- a first membrane layer;
- a second membrane layer located below said first membrane layer;
- an absorbent pad layer under said second membrane layer for collecting perspiration;
- and
- an air gap between said first membrane layer and said absorbent pad layer;
- wherein said air gap separates said absorbent pad layer from said first membrane layer to prevent movement of liquid between said absorbent pad layer and said first membrane layer.
A method for the determination of the presence of Contamination From Within (CWFI) on skin, comprising the steps of:
- cleansing a portion of skin;
- saving material removed from the said skin by said cleansing;
- analyzing said material to detect chemicals or biochemicals;
- and
- applying a sweat collecting patch to said portion of skin;
- analyzing said patch to detect said chemicals or biochemicals;
- and
- determining the presence of CFWI by comparing the results of the analysis of said material to the results of the analysis of said patch.
A device for collecting chemicals or biochemicals in perspiration comprising;
- a first membrane layer;
- a second membrane layer located below said first membrane layer;
- a first absorbent pad layer under said second membrane layer for collecting perspiration;
- and
- a second absorbent pad layer between the first membrane layer and the second membrane layer or absorbing CFWO.
Dependencies are inferred from the claim text.